Amazon.com: Real Pen Stylus for Ideapad Yoga Book YB1 X90F YB1-X90L YB1-X90F YB1-X91L YB1-X91F 10.1", Compatible ZA150000US, ZA0V0224US, ZA0V0035US, ZA0V0091US ZG38C01331 for Touchscreen, Real Pen, Black : Cell Phones & Accessories
Lenovo Yoga Book Android Unboxing (2 in 1 Tablet With Touch Keyboard, Real Pen Stylus) - YouTube
Amazon.com: BoxWave Stylus Pen Compatible with Lenovo Yoga Book C930 (Stylus Pen by BoxWave) - AccuPoint Active Stylus, Electronic Stylus with Ultra Fine Tip for Lenovo Yoga Book C930 - Metallic Silver :